F90VB
- Enables Fortran programs to access COM/ActiveX objects and call Visual Basic DLLs. Enables creation of Fortran DLLs that handle intrinsic Visual Basic data types. Includes TLView, a Type Library browser.
- http://www.canaimasoft.com/f90vb/Features.htm

F90SQL
- Enables Fortran programs to read or write data directly from or into any format that has a Windows Open Database Connectivity (ODBC) driver.
- http://www.canaimasoft.com/f90sql/

Winteracter
- Multi-platform user interface and graphics subroutine library for Fortran 77/9x developers.
- http://www.winteracter.com/iss.htm

NCAR's Mathematical and Statistical Libraries
- Source code and documentation for libraries in the areas of geophysical science, Fast Fourier Transforms, separable elliptic PDEs, interpolation, Legendre polynomials, spherical harmonics, general mathematics, eigensystem solvers, linear equation solvers,
- http://www.cisl.ucar.edu/softlib/mathlib.html

MINPACK
- A free, portable library for solving nonlinear systems of equations and nonlinear least squares problems.
- http://www.cisl.ucar.edu/softlib/MINPACK.html

IMSL
- Comprehensive mathematical and statistical library produced by Visual Numerics.
- http://www.vni.com/products/imsl/fortran/overview.html

FGSL: A Fortran interface to the GNU Scientific Library
- Portable, object-based Fortran interface to the GNU scientific library, a collection of numerical routines for scientific computing. The package is licensed under the GPL.
- http://www.lrz-muenchen.de/services/software/mathematik/gsl/fortran/index.html

A Fortran 90 Numerical Library (AFNL)
- Set of MODULES by Alberto Ramos containing definitions of Fourier series and polynomials and able to perform linear (multi-)dimensional fittings, compute integrals, sort data, compute roots of functions, and perform other numerical tasks.
- http://sourceforge.net/projects/afnl/

FLIBS - A collection of Fortran modules
- Fortran modules by Arjen Markus to interface with C libraries, manipulate strings, write CSV files, manipulate file and directory names, implement abstract data types and structures, do automatic differentiation, and perform other tasks.
- http://flibs.sourceforge.net/

Xeffort
- Free, open-source library for building GUI applications in all flavors of Visual Fortran. Site has other Fortran resources and samples.
- http://www.xeffort.com/

Pilib
- Platform-independent library under development for Fortran 90/95 to create GUIs, do file I/O.
- http://sourceforge.net/projects/pilib

CMLIB
- Comprehensive Fortran 77 library.
- http://lib.stat.cmu.edu/cmlib/index/index

Ezconsole
- Set of simple procedures by Gary Scott for interfacing with the console window on Windows from Fortran.
- http://www.fortranlib.com/ezann.html

SLATEC
- A comprehensive software library containing over 1400 general purpose mathematical and statistical routines written in Fortran 77.
- http://www.netlib.org/slatec/

ODEPACK
- A collection of Fortran solvers for the initial value problem for ordinary differential equation systems.
- http://www.netlib.org/odepack/

ITPACK
- A packages for solving large sparse linear systems by iterative methods.
- http://www.netlib.org/itpack/

DAEPAK
- A subroutines for solving some types of algebraically explicit differential algebraic equations.
- http://www.netlib.org/contin/manpak/

BLAS (Basic Linear Algebra Subprograms)
- A high quality "building block" routines for performing basic vector and matrix operations. Level 1 BLAS do vector-vector operations, Level 2 BLAS do matrix-vector operations, and Level 3 BLAS do matrix-matrix operations.
- http://www.netlib.org/blas/

SCILIB
- A portable FORTRAN emulation of CRAY SCILIB.
- http://www.netlib.org/scilib/

CodeLib
- Fortran 77 codes for large systems of linear equations, systems of nonlinear equations, nonlinear least squares, ordinary differential equations, and quadrature.
- http://www.zib.de/Numerik/numsoft/CodeLib/index.en.html

Intel Math Kernel Library
- Set of optimized, thread-safe mathematical functions for engineering, scientific and financial applications requiring high performance. The functional areas of the library include the BLAS and LAPACK Libraries, Discrete Fourier Transforms, Vector Math L
- http://www.intel.com/software/products/mkl/

AMD Core Math Library (ACML)
- Download the library which incorporates BLAS, LAPACK and FFT routines.
- http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_2282,00.html

Math a la Carte
- Collections of mathematical software in Fortan and C. Software is free for some uses and can be purchased for others. Much of the software was developed at the Jet Propulsion Laboratory.
- http://mathalacarte.com

Transient Energy System Simulation Tool
- Fortran program to simulate the transient performance of thermal energy systems.
- http://www.trnsys.com

Ngmath
- Collection of interpolators and approximators for one-dimensional, two-dimensional, and three-dimensional data, callable from Fortran and C.
- http://ngwww.ucar.edu/ngdoc/ng/ngmath/index.html

DSP Library
- Digital signal processing programs written in Fortran. It includes subroutines for FIR and IIR filter design, FFT routines, and various other programs for signal processing.
- http://www-ocean.tamu.edu/~baum/dsp.tar.gz

SEPlib
- Stanford Exploration Project library for seismic data processing.
- http://sepwww.stanford.edu/software/seplib/

Numerical Algorithms Group (NAG)
- Libraries, compilers, tools, information, software for statistics, visualization, symbolic calculation, simulation.
- http://www.nag.co.uk/

Microglyph Systems
- SciComm serial communications library, SciPlot scientific plotting graphics library, SciSnet sockets network communication library. Compatible with Fortran and C compilers.
- http://www.microglyph.com/

Daepack
- Library for combined symbolic/numeric analysis of Fortran models, including sparsity pattern generation, discontinuity locking, and automatic differentiation.
- http://yoric.mit.edu/daepack/daepack.html

GQOPT
- Fortran package by Richard Quandt for numerical optimization and numerous other statistical and utility routines. It is available for a number of platforms, such as IBM mainframes, Vax computers, CRAY supercomputers, IBM-compatible PCs, and Sun, DEC, and
- http://www.quandt.com/req.html

Boeing Mathematics and Information Software
- Algorithms for solving large linear systems, optimal control problems, and other topics.
- http://www.boeing.com/phantom/math_infosw/

HSL
- Codes for large-scale scientific computation.
- http://www.cse.clrc.ac.uk/nag/hsl/contents.shtml

GinoMenu
- Interactive GUI builder and Fortran subroutine toolkit for developing GUI applications under Windows.
- http://www.gino-graphics.com/products/menu.htm

RealWin
- Library for writing Windows applications in Fortran.
- http://www.indowsway.com/